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251934-YTG-J-0910
Johnson Controls Unitary Products 69
Sound Performance
Electric Heat Multipliers
Voltage
kW Capacity Multipliers
1
1. Electric heaters are rated at nominal voltage. Use this table to determine the electric heat capacity for
heaters applied at lower voltages.
Nominal Applied
240
208 0.75
230 0.92
480 460 0.92
600 575 0.92
ZJ/ZR/ZF Indoor Sound Power Levels
Size
(Tons)
CFM
ESP
(IWG)
Blower
Sound Power, dB (10
-12
) Watts
Sound Rating
1
dB (A)
Octave Band Centerline Frequency (Hz)
RPM BHP
63 125 250 500 1000 2000 4000 8000
180 (15) 6000 1.0 1,080 4.6 91 88 90 90 87 85 81 81 76
210 (17.5) 7000 1.0 940 5.1 85 84 84 82 81 81 77 74 69
240 (20) 8000 1.0 1,020 6.6 86 85 85 83 82 82 78 75 70
300 (25) 10000 1.3 1,160 12.5 92 91 91 89 88 88 84 81 76
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric/free field. The dBA values
provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan manufacturer has no way
of knowing the details of each system. This constitutes an exception to any specification or guarantee requiring a dBA value of sound data
in any other form than sound power level ratings.
ZJ/ZR/ZF Outdoor Sound Power Levels
Size
(Tons)
Sound Rating
1
dB (A)
Sound Power, dB (10
-12
) Watts
Octave Band Centerline Frequency (Hz)
63 125 250 500 1000 2000 4000 8000
180 (15) 92 90 93 91 89 86 83 80 75
210 (17.5) 92 91 94 92 89 86 83 81 76
240 (20) 92 91 94 92 89 87 83 81 76
300 (25) 92 92 95 93 89 87 84 81 77
1. Rated in accordance with ARI 270 standard.